A One-Class Classification-Based Control Chart Using the 𝐾-Means Data Description Algorithm

Table 2

Characteristics of three OC-charts.

	K-chart	KNN-chart	KM-chart
Charting statistic	𝐾𝐷	𝐾^2	𝐷^2
One-class classifier	SVDD	KNNDD	KMDD
Parameters	RBF’s width 𝜎	The size of nearest neighbor 𝑘	The number of clusters 𝐾
Distance type	Kernel distance	Euclidean distance	Euclidean distance
Center	Kernel center	KNN center	Cluster center
Suitable cases	Known and unknown distribution	Known and unknown distribution	Known and unknown distribution